The lost Superman PlayStation game has appeared in public – Engadget

In a lengthy post on DeviantArt, a user going by the name Richard Mandel says that they won a copy of the game in an eBay auction in 2013. They say that this is “not a leak. This is a release.” But they held off on posting it due to some scandal in the rare-games community at the time. 

According to Frank Cifaldi, founder of the Video Game History Foundation, the files are dated eight months later than the demo version, which was already in the public domain. Naturally, to make this work, you’ll need to run an emulator, but be warned: If you try and run an unreleased port of Superman 64, you may wind up actually playing Superman 64.